Fire-extinguisher.



G. J. HAMBERGER.

FIRE EXTINGUISHER. APPLICATION FILED JULY 25 1911.

Patented Oct. 1, 1912.

that" Manners cont outrun STATES PATENT OFFICE.

GEORGE J. HAM-BERGER; or NEWARK, NEW JERSEY.

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Specification of Letters Patent.

Patented Oct. 1, 1 912.

Application. filed Jilly 2 5, 1911. Serial No. 640,488.

To all whom it may concern:

Be it known that I, GEORGE J. HAM'BER- can, a citizen of the United States, residing at Newark, in the county of Essex and State 5 of New Jersey, have invented certain new and useful Improvements in Fire-Extinguishers; and I do hereby declare the fol lowing to be a full, clear, and exact descrip' tion of the invention, such as will enable to others skilled in the art to which it apper tains to make and use the same, reference being had to the accompanying drawings, and to figures of reference marked thereon, which form a partof this specification.

I This invention relates to a fire-eX-tim guisher which is adapted to hold a liquid extinguishing material and is constructed so that the bottom and top of the extinguisher can be scaled to prevent the evaporation of the liquid within.

The extinguisher is constructed to cause the ejection of the liquid when desired, the ejecting or expelling means being quickly operative when the sealing devices are released, the sealing devices being operated by the same handle as the expelling means. The ini'entionfurther consists of certain details of construction and arrangements of parts that go to make a more ellicient de-' vice, these being brought out more fully in the following specification and also embodied in the claims.

T he intention is illustrated in the accompanying drawing, in which- .l igure 1 a vertical section of the extinguisher ready for use. Fig. 2 is a similar view with the extingu sher closed and sealed. Fig. 3 is a perspective view of the bottom end of a cylinder used in the extinguisher.

The extinguisher consists of a casing 10 which is preferably made of sheet metal, the casing having a top 11 which is provided with a filling plug 12 to permit the %5 pouring in of the extinguishing liquid. WVit-hin the casing v10 is a cylinder 13 in which slides the piston 14; of any usual. construction and having, preferably, a leather or similar flexible bucket 15 therein. The

$0 piston-rod 1-6 is attached to the piston 14 and extends through the opening 17 in the top the casing. A handle 18 is at the end of the rod 1?? to provide for its manipulation. The piston-rod 16 has a collar 19 which. acts as backing for a washer 20, the collar being preferably provided with ahas nose 2-2 against which is brought when the piston and of its forward stroke. The stufiing-box 50 pered marginal flange 21. The top of the casing the washer 20 is about at the 23 can be placed within the nose, if desired.

The casing is provided with a block-2 1 which has an outlet'opening 25 therein, as has also the casing. The block has a screwthread 26 and the piston has a lug 27 having 5 screw-threads 28 which engage the sc'rewthreads 26 of the block 2 1 when the pistonrodi's rotated. The flat face 29 of the lug forms a valve which is seated on the flat bottom 30 of the interiorly screw-threaded '70 portion 26, whichforms a'valve-seat, when the piston is rotated by means of its rod, and the outlet of the extinguisher is sealed. The screw-threaded co-acting elements 27 and 24: are preferably provided with tascrew-threaded portions, as shown in the drawings, so that they can be quickly joined and also quickly separated.

When the lug 27 is screwed down in the block 24 it draws down the piston-rod 16 30 and compresses the washer 20 against the n'o-se 22 and thus seals the opening through which the piston-rod slides to prevent leakage or evaporation at that point.

It will be evident that the reciprocation of thepiston-rod and its piston will empty the cylinder at one complete forward stroke.

At the back stroke the piston draws liquid from. outside the cylinder 13 and within the casing 10, through the holes 31 in the bottom of the collar 82, which collar is fastened to the block 24 and is alsoattached to the cylinder 13, and being larger than the block or cylinder, forms a chamber 33. The flaps 34, which may have thesprings 35 and which are fastened by rivets 36, act as checks or valves over the openings 31.

When an extinguisher is filled and laid away or hung up for use, the handle of the piston-rod is rotated and the outlet and also the opening through which the piston-rod. projects are sealed to prevent leakage and evaporation of the contents of the extinguisher. When the extinguisher is needed, the handle is unscrewed, about one rotation being necessary when tapered threads are used, and the'piston can then be reciprocated to expel the contents of the extinguisher. The threads are usually made with a coarse pitch so that unnecessary rotation to bring about sealing'is avoided.

ll. Will of course be understood that I do portion of the block, the lug having from the scope of 1 claim 1s: a v

1. A fire-extinguisher consisting of a casand reciprocating piston in the cylinder havnot wish liinit myself to the exact construction shown, since minor details of con-' struction can be changed'withoutdeparting my invention. Having thus described my invention,'what casing, the casing having an outlet on the end opposite the projected piston-rod, a bloc forming a valve-seat, the block having an internal tapered screw-threaded portion and having an opening in let of ,xthe casing, a tapered screw-threaded lug on the piston adapted to engage the screw-threaded portion of the block, the lug having a flat of; the block and acting to seal the outlet when the piston is rotated at the end of ing, a cylinder within the casing, a rotary and reciprocating piston in the cylinder havinga rod projecting from one end of the casing, the casing having an outlet on the end opposite the projected piston-rod, a. block forming a valve-seat, the block having and the cylinde to form a an internal screw-threaded portion and havchamber at the a flat face'to engage the seat portion of the block acting to seal thev outlet when the piston is rotated atthe end of its power stroke.

2. A fire-extinguisher consisting of a oasing, a cylinder within the casing, a rotary mg a rod projecting from one end of the Copies of this patent may be olitained for five cents each by Washington, R

addressing the Comfiissioner of Patents, 0.

line with the outface to engage the seat portion,

its power stroke, a collar engaging the blocl l casing to 

